Improvement in apparatus for the manufacture of salt



W. W. ELMER. Apparatus .for the Manufacture Of'SaIt.

N0. 201,762. Patented March 26,1878

QSMATW UNITED STATES PATENT OEEIoE.

WILLIAM W. ELMER, OF BAY CITY, MICHIGAN.

IMPROVEMENT IN APPARATUS FOR THE MANUFACTURE OF SALT.

Specification formingpart of Letters Patent No. 201,762, datedMarch 26,1878; application filed August 27, 1877.

To all whom it may concern:

Be it known that I, WILLIAM W. ELMIER, of Bay City, in the county of Bayand State of Michigan, have invented an Improved Apparatus for theManufacture of Salt from Liquid Brine, of which the following is aspecification:

The nature of my invention relates to that class of apparatus forevaporating brine which use steam-pipes for giving the desired heat tothe liquid; and consists in providing such a pan with a system ofperforated air-pipes, and with peculiar mechanism for raising andlowering the said air-pipes, whereby such pipes can be lowered to anydesired depth in, or raised entirely out of, the brine.

The drier the air used with my apparatus, the better will be the result,and a cheap and simple way to dry such air is by passing it over alime-chamber before admitting to the brine under treatment; or it may beheated or superheated by any known process, so that it may be employedat the temperature of the surrounding media, depending on thetemperature of the brine and air of the chamber where the process ofcrystallization is being carried on.

Figure 1 is a perspective view of a grainer, such as is in ordinary usefor evaporating by confined steam. Fig. 2 is a plan view of anarrangement of air-pipes perforated to dis charge air for the purpose ofagitating the brine. Fig. 3 is an enlarged perspective View of myarrangement for elevating or lowering the air-pipes at pleasure.

Like letters indicate like parts in each figure.

In the drawings, A represents a grainer or evaporator of the ordinaryconstruction, where confined steam is employedin the series of pipes Bin the bottom, and which are connected with any convenient source ofsteamsupply. 0 is an air-pipe, its front end being connected to aforce-pump or fan, (not shown,) and D are perforated pipes connectingwith said pipe 0, through which air is forced to agitate the brine. Eare other perforated pipes, attached by hollow cranks F to the bottom ofthe air-pipe G, and these pipes E are designed to be lowered into thebrine and ele vated out of it, as may be desired, to prevent brineentering the pipes through the perforations when the air-pressure isrelieved.

To accomplish this a crank-rod, G, is provided with a bevel-pinion, a,which engages with a similar pinion, I), on the upright shaft H;

which is threaded, and engages with a fixed nut, c, secured to the pipeE. Perforated branches may be run laterally from these pipes, ifdesired.

The mechanism Ihave shown and described may be employed, or othersuitable devices may be used without departing from the spirit of myinvention.

What I claim as my invention, and desire to secure by Letters Patent,is-- The combination, with the supply-pipe O and branch pipes E,connected by hollow cranks F, of the shafts G, vertical screw-shafts H,nuts 0, and gear a b, constructed, arranged, and operating substantiallyas described and shown.

WILLIAM W. ELMER. Witnesses:

H. S. SPRAGUE, H. L. AULLs.

